201217675 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種防水方法及其結構，更特別是關於提 供具有第一殼體與第二殼體之電子裝置用以達到良好防水 功效之防水方法及其結構。 【先前技術】 • 請參考第la圖，第la圖係先前技術中電子裝置之部分 β · 斷面示意圖。傳統上，在電子裝置的防水結構設計中，係在 該電子裝置之下殼體2設計有凹部22，並且於該凹部22中 環繞設置環狀膠圈（〇-ring)4,電子裝置的上殼體6則設有對 應凹部22之凸出部62。當上殼體6與下殼體2接合時，凸 出部62係容納於凹部22之中。上殼體6與下殼體2接合產 生的作用力F透過該上殼體6上的凸出部62施加於該環狀 膠圈4，使得該環狀膠圈4產生形變，用以阻止外部的水氣 φ (亦或灰塵）透過該上殼體6與該下殼體2結合之後的殼體 、 接縫處8進入到該電子裝置内部，如第lb圖所示之斷面示 意圖。 然而，未受力之該環狀膠圈4之斷面係為圓形，因而當 凸出部62擠壓環狀膠圈4時，其形變的方向係為不可預測 的，亦即，該環狀膠圈4因受施加而產生之反作用力F’係 不平均的。舉例而言，環狀膠圈4受施加可能朝向電子裝置 外側形變，而造成外侧受力不均且較内侧為大的狀況，故當 電子裝置之殼體2、6係以塑膠或其它剛性較低的材質製成 201217675 時，上述受力不均的狀況係有可能導致上下殼體接缝處產生 形變，使得原先設計應為緊密的該殼體接縫處無法有效地緊 密結合，進而影響了原有防水結構之設計，甚至大幅降低其 防水效果。 為解決上述習知技術之缺失，可參考台灣新型專利公告 第M381599號之「具有改良防水結構之可攜式電子裝置組 合結構」，其係利用氣密軟性材質用以取代該環狀膠圈，用 以達到防水之功效。然而，該氣密軟性材質係為橡膠或塑膠 • 材質，且必須在該橡膠或塑膠中間部形成空心結構，使其達 到上述所需之防水結構，而形成該空心結構勢必會增加其製 作的成本。故需要一種除可用以解決習知防水結構之缺失 外，亦可有效地達到防水功效之方法與結構。 【發明内容】 本發明之一目的係提供一種防水方法，其係提供用以避 φ 免電子裝置之殼體接縫處因產生形變而影響其防水效果。 本發明之另一目的係提供一種防水結構，其係提供電子 裝置用以達到防水之目的。 為達上述目的與其它目的，本發明係提出一種防水方 法，係用於具有第一殼體與第二殼體之電子裝置，並且該第 一殼體具有第一邊緣用以接合該第二殼體之第二邊緣，該防 水方法包含：於該第一殼體上形成環繞該第一邊緣之凸出 部，並於該第二殼體上形成環繞該第二邊緣且對應該凸出部 之凹部，其中當該第一邊緣接合該第二邊緣時該凹部容納該 201217675 凸出部’於該凹部巾設置彈性單元，轉性單元係具有本體 及凸出於該本體之軟質干涉體；以及，接合該第—邊緣與該 第二邊緣，以令該凸出部擠壓該軟質干涉體使其產生形變而 形成第一干涉結構 /為達上14目的與其它目的，本發明提^ —種防水結構， 係用於具有第-殼體與第二殼體之電子I置，並且該第一殼 體具有第-邊制以接合該第二殼體之第二邊緣，該防水結 構包3凸出部、凹部與彈性單元。該凸&部係環繞該第一邊 緣而形成於該第-殼體上；該凹部係環繞該第二邊緣而形成 於該第二殼體上，且該凹部係對應該凸出部；以及，該彈性 單元係沿該凹部而容置於其中，卿性單元具有本體盘軟質 干涉體’且該軟質干涉體係自該本體延伸凸出，並於該第二 邊緣接合該第二邊緣時，該凸出部係容納於該凹部中且壓迫 该軟質干涉體使其產生形變以形成第—干涉結構。 ^知技術純，本發明謂水方法及其職，係利用 _ -豸與延伸凸iU該本體之軟質干涉體的雜單元，且可 在不改變原有電子裝置之殼體設計下，除可用以形成第 =:亦:達成當該等殼體結合時，該等殼體不致於因 =_早兀產生過度形變或形變不均，而造成該等殼體益 _讀合等的缺失。再者，本發明亦可再透過具有 體’用以達錢—步的防水功效，亦即該硬質干涉 =除係可用以固定該彈性單元外，且亦可形成第二干涉結 故藉由本利之时方法及其結構，除係可心解決習 201217675 知技術中因為該彈性單元過度形變或形變不均而無法使得 該等殼體緊密結合之缺失外，亦可達到更高的防水防塵 (Ingress Protection ; IP)等級。 【實施方式】 為充分瞭解本發明之目的、特徵及功效，兹藉由下述具 體之實施例’並配合所附之圖式，對本發明做—詳細說 說明如後： 參考第2圖，係本發明第一實施例之防水方法的流程 圖。於第2圖中’該防水方法係用於具有第—殼體 私 體，電子裝置，並且該第—殼體具有第—邊緣用以接合該第又 -殼體之第二邊緣’該防水方法包含：於該第—殼體上 ，繞該第—邊緣之凸出部，亦即該凸出料環繞設置於該第 :殼體之職的部份’並且於該第二殼體上形成環繞該第二 邊緣且對顧凸㈣之畴；接著，於該凹部巾設置彈性單 :中=Γ具有本體及凸出於該本體之軟質干涉體， =Γ::::為，或矩形，以及該軟質干涉體 糸為祕體’而上述中的該稜錐 形且該多邊形之各邊係再延伸至底部係為多邊 著，接合該第-邊緣財第點的立體錐；接 質干涉體似“’ ’、 邊以令該凸出部擠墨該軟 賢干涉體使其產生形變而形成第—干涉結構。 秋 換言之，藉由本發明係當該彈性 ° 先受到該凸出部的擠壓時，該彈之該軟質干涉體首 -部產生形變，且由於該軟質涉體於該 丁^體之大小相對較小，故其 201217675 形變產生之反作用力並不足以令該第-殼體之該第-邊緣 產生形變。 田該第喊體之該凸出部係藉由施加向下的擠壓作用 力朝向該軟If干㈣與該本體移動擠壓時，該軟#干涉體係 首先承受向下的該作用力而產生形變；接著，已形變的該軟 質干涉體係再度將向下的該作用力間接地傳遞至該本體，促 使該本體亦同樣產生形變。值得注意的是，該軟質干涉體係 ' 有效地分散向下的該作用力，而所間接影響的該本體，於產 生形變之後’該形變量係不會影響該第—邊緣與該第二邊緣 的結合。 此外’根據該凸出部的設計’除了可擠壓該軟質干涉體 之外’亦可進—步擠壓該彈性單元之該本體使其產生形變。 然而’由於該本體之截面係四邊形或矩形，該凸出部可對該 本體平均施壓而使其產生均勻的的形變，且對應產生之反作 用力可平均施加於殼體接縫處而避免殼體接縫處變形導致 鲁 防水防塵效果不佳的狀況。 本實施例之軟質干涉體可為複數個，分別凸出於本體之 表面上，且當第-邊緣接合第二邊緣時，凸出部擠壓該等軟 質干涉體而形成複數個第-干涉結構。軟質干涉體的數量可 根據使用者需求而做設計。 參考第3圖，係本發明第二實施例之防水方法的流程 圖。於第3圖中，除上述第—實施例之防水方法外，更包含 形成硬質干涉體於該凸出部，並於接合該第—邊緣與該第二 邊緣時，令該硬質干涉體擠壓與定位該彈性單元之該本體使 201217675 其產生形變而形成第二干涉結構。 於此實施例中，該軟質干涉體與該硬質干涉體係不對稱 地分別地設置於該凸出部與該凹部。換言之，該凸出部之一 端係具有凸出的硬質干涉體，且該硬質干涉體係可形成在不 對應該軟質干涉體之位置上。當該第一殼體之該第一邊緣與 該第二殼體之第二邊緣接合時，該硬質干涉體係可擠壓該彈 性單元之該本體使其產生形變，而該硬質干涉體擠壓該本體 之處可形成不同於第一干涉結構的第二干涉結構。其中，該 • 第二干涉結構係可進一步提供更進一步的防水效果。此外， 該硬干涉結構結構還可藉由擠壓提供該本體定位效果。值得 注意的是，該硬質干涉體並不侷限於任何形體，亦即該硬質 干涉體僅需要凸出自該凸出部，即屬本發明之硬干涉結構的 範缚。 參考第4a與4b圖，係本發明第三實施例之防水結構的 斷面示意圖。於第4a圖中，該防水結構10係用於具有第一 φ 殼體12與第二殼體14之電子裝置，請注意，圖式之第一殼 體12以及第二殼體14僅繪示出兩者接合部分的斷面圖，並 未表示出第一殼體12以及第二殼體14的整體。該第一殼體 12具有第一邊緣122用以接合該第二殼體14之第二邊緣 142,該防水結構10包含凸出部16、凹部18與彈性單元20。 該凸出部16係環繞該第一邊緣122而形成於該第一殼體12 上；該凹部18係環繞該第二邊緣142而形成於該第二殼體 14上，且該凹部18係對應該凸出部16 ;以及，該彈性單元 20係沿該凹部18而容置於其中，該彈性單元20具有本體 201217675 202與軟質干涉體204,且該軟質干涉體204係自該本體202 延伸凸出。該彈性單元20之該本體202的截面可為四邊形 或矩形，且該軟質干涉體204可為稜錐體。於本實施例中， 該本體202係以矩形體為例進行說明。於另一實施例中，該 本體202與該軟質干涉體204之材質係可為橡膠。再者，當 該第一邊緣122接合該第二邊緣142時，該凸出部16係容 納於該凹部18中且壓迫該軟質干涉體204使其產生形變以 形成第一干涉結構。 接著參照第4b圖，當第4a圖之該第一殼體12與該第 二殼體14接合時，環繞設置於該第一殼體12之第一邊緣 122之該凸出部16係插入至同樣環繞形成於該第二殼體14 之第二邊緣142之該凹部18，並且擠壓該彈性單元16之該 軟質干涉體204。值得注意的是，該彈性單元20之該軟質 干涉體204係首先受到該凸出部16施以作用力F，而該軟 質干涉體204因受到向下的該作用力F而產生形變，並進一 步擠壓該本體202致使該本體202同樣於該凹部142内產生 形變。上述該軟質干涉體204與該本體202、該凸出部16 及該凹部18間互相接觸並擠壓而形成第一干涉結構，藉以 提供防水功能。再者，由於該軟質干涉體204受到該作用力 F時變形量較小，故不致於會因為施加過度反作用力F’於該 凸出部16而造成殼體變形的情形。藉由本發明之具有第一 干涉結構之防水結構，其係在不影響該第一殼體12之該第 一邊緣122與該第二殼體14之該第二邊緣142的緊密結合 設計下，使其仍保有其防水結構。 201217675 參考第5a與5b圖，係本發明第四實施例之防水結構的 斷面示意圖。於第5a圖中，該防水結構10’係用於具有第一 殼體12與第二殼體14之電子裝置，並且該第一殼體12具 有第一邊緣122用以接合該第二殼體14之第二邊緣142， 其係除包含與前述實施例相同之凸出部16、凹部18與彈性 單元20外。其中，該第一殼體12更包含硬質干涉體124， 且該硬質干涉體124係自該凸出部16延伸凸出，並於當該 第一邊緣122接合該第二邊緣142時，該硬質干涉體124與 • 該軟質干涉體204係不對稱地分別地設置於該凸出部16與 該本體20上。值得注意的是，該硬質干涉體124並不侷限 於任何形體，其僅需要凸出自該凸出部16即屬本發明所述 之硬質干涉體124。 接著參照第5b圖，當該第一殼體12與該第二殼體14 結合時，環繞地設置於該第一殼體12之第一邊緣122之該 凸出部16係插入到同樣環繞設置於該第二殼體14之第二邊 ^ 緣142之該凹部142中，並且擠壓該彈性單元20之該軟質 干涉體204。於此，該彈性單元20之該軟質干涉體204係 承受到施以於該凸出部16之作用力F而產生形變，並且在 此同時，位於該凸出部16之該硬質干涉體124係擠壓與該 彈性單元20之該本體202，亦即該本體202與該軟質干涉 體204係同時地且分別地承受來自該硬質干涉體124與該凸 出部16之向下的該作用力F，並且使得該本體202於該凹 部18產生形變。該硬質干涉體124與該本體202互相接觸 並擠壓而形成第二干涉結構，藉以提供防水功能。而值得注 11 201217675 意的是，由於本實施例中該硬質干涉體124較小，其對該本 體202擠壓所造成該本體202之變形量較小，因此該本體 202並不會施加過度的反作用力F’於該硬質干涉體124而造 成殼體變形的情形。此外，由於該硬質干涉體124局部擠壓 該本體202，因此可提供定位該本體202之效果。 綜上所述，藉由前述之第一干涉結構以及第二干涉結 構，本發明之防水結構係除可不因為過度施加反作用力於殼 . 體上造成殼體接縫處變形而導致整體防水效果降低外，又可 .籲 進一步有效地提高與加強防水的效果。 與習知技術相較，本發明之防水方法及其結構，係利用 具有軟質干涉體之彈性單元，且可在不改變原有電子裳置之 殼體設計下’除可用以形成第一干涉結構外提供防水功能 外，亦可達成當該等殼體結合時，不致於因為該彈性單元產 生過度的反作用力使該等殼體變形而無法緊密結合。再者， 本發明亦可再透過具有硬質干涉體之殼體達成進一步的防 φ 水功效’亦即該硬質干涉體除係可用以固定該彈性單元外， . 且亦可形成第二干涉結構。 。故藉由本發明之防水方法及其結構，除係可用以解決習 知技術中因為該彈性單元產生過度的反作用力而無法使得 該等设體緊彳δ、結合之缺失外，亦可達到更高的防水防塵 (Ingress Protection ; ip)等級。 本發明在上文中已以較佳實施例揭露，然熟習本項技術 者應理解的是，該實施例僅用於描繪本發明，而不應解讀為 限制本發明之範圍。應注意的是，舉凡與該實施例等效之變 12 201217675 化與置換，均應設為涵蓋於本發 之保護範圍當以下文之㈣，内。因此，本發明 心甲μ專概圍所界定者為準。 【圖式簡單說明】 第la®剌知技術之时結構之未結合前之斷面示意 圖， 第lb圖係習知技術之防水結構之結合後之斷面示意圖 第2圖係本發明第—實施例之防水方法的流程圖； 第3圖係本發明第二實施例之防水方法的流程圖； 第4a圖係本發明第三實施例之防水結構的未結合前之 斷面示意圖； 第4b圖係本發0>^三實施例之防水結構的結合後之斷 面示意圖； 第5a圖係本發明帛四實施狀防水結構的未結合前之 斷面示意圖；以及 第5b圖係本發明第四實施例之防水結構的結合後之斷 面示意圖。 【主要元件符號說明】 2 下殼體 22 凹部 4 環狀膠圈 6 上殼體 62 凸出部 13 201217675 8 殼體接縫處 ίο' ur 防水結構 12 第一殼體 122 第一邊緣 124 硬質干涉體 16 凸出部 18 凹部 20 彈性單元 202 本體 204 軟質干涉體 F 作用力 F, 反作用力201217675 VI. Description of the Invention: [Technical Field] The present invention relates to a waterproof method and structure thereof, and more particularly to providing an electronic device having a first housing and a second housing for waterproofing Method and its structure. [Prior Art] • Please refer to the figure la, which is a schematic diagram of a part of the prior art electronic device. Conventionally, in the waterproof structure design of the electronic device, the housing 2 is designed with a recess 22, and an annular apron 4 is disposed around the recess 22, on the electronic device. The housing 6 is provided with a projection 62 corresponding to the recess 22. When the upper casing 6 is engaged with the lower casing 2, the projection 62 is housed in the recess 22. The force F generated by the engagement of the upper casing 6 and the lower casing 2 is applied to the annular rubber ring 4 through the projection 62 on the upper casing 6, so that the annular rubber ring 4 is deformed to block the exterior. The water vapor φ (also or dust) enters the inside of the electronic device through the casing and the joint 8 after the upper casing 6 is combined with the lower casing 2, as shown in the sectional view of FIG. However, the uncoated annular apron 4 has a circular cross section, so that when the convex portion 62 presses the annular apron 4, the direction of deformation is unpredictable, that is, the ring The reaction force F' of the apron 4 due to application is not uniform. For example, when the annular apron 4 is applied, it may be deformed toward the outside of the electronic device, and the outer force is uneven and the inner side is large. Therefore, when the housings 2 and 6 of the electronic device are made of plastic or other rigidity, When the low material is made of 201217675, the above-mentioned uneven force condition may cause deformation of the joint of the upper and lower shells, so that the original design should be tight and the joint seam cannot be effectively tightly combined, thereby affecting The original waterproof structure is designed to even greatly reduce its waterproof effect. In order to solve the above-mentioned shortcomings of the prior art, reference can be made to the "Portable Electronic Device Combination Structure with Improved Waterproof Structure" of Taiwan Patent No. M381599, which uses an airtight soft material to replace the annular rubber ring. Used to achieve waterproof effect. However, the airtight soft material is made of rubber or plastic material, and a hollow structure must be formed in the middle portion of the rubber or plastic to achieve the above-mentioned required waterproof structure, and the formation of the hollow structure is bound to increase the cost of production. . Therefore, there is a need for a method and structure that can effectively achieve waterproofing in addition to the drawbacks of conventional waterproof structures. SUMMARY OF THE INVENTION One object of the present invention is to provide a waterproofing method which is provided to prevent the waterproofing effect of the joint of the casing of the electronic device from being affected by deformation. Another object of the present invention is to provide a waterproof structure that provides an electronic device for waterproofing purposes. To achieve the above and other objects, the present invention provides a waterproof method for an electronic device having a first housing and a second housing, and the first housing has a first edge for engaging the second housing a second edge of the body, the waterproofing method includes: forming a protrusion around the first edge on the first housing, and forming a second edge on the second housing and corresponding to the protruding portion a recess, wherein the recess accommodates the 201217675 projection when the first edge engages the second edge, and the elastic unit is disposed on the concave towel, the flexible unit having a body and a soft interference body protruding from the body; Engaging the first edge and the second edge to cause the protrusion to press the soft interference body to deform to form the first interference structure/for the purpose of the first object, and the object of the invention a structure for the electronic housing having the first housing and the second housing, and the first housing has a first side to engage the second edge of the second housing, the waterproof structural package 3 protruding Part, recess and elastic unit. The convex & portion is formed on the first housing around the first edge; the recess is formed on the second housing around the second edge, and the recess is corresponding to the protrusion; The elastic unit is received along the recess, the unitary unit has a body disk soft interference body' and the soft interference system protrudes from the body, and when the second edge engages the second edge, the A projection is received in the recess and compresses the soft interference body to deform to form a first interference structure. ^Knowledge technology pure, the present invention is a water method and its function, which utilizes the _-豸 and the extended convex iU of the soft interfering body of the body, and can be used without changing the housing design of the original electronic device. In order to form the first =: also: when the shells are combined, the shells are not caused by excessive deformation or deformation unevenness due to =_ early flaws, resulting in the loss of such shells. Furthermore, the present invention can also be further permeable to the waterproofing effect of the body's use for the money-step, that is, the hard interference = the system can be used to fix the elastic unit, and the second interference can also be formed by the advantage of the benefit. The method and its structure, in addition to the system can be solved in the future, because the elastic unit is too deformed or deformed to make the shells tightly combined, it can also achieve higher waterproof and dustproof (Ingress Protection ; IP) rating. [Embodiment] In order to fully understand the object, features and effects of the present invention, the present invention will be described in detail by the following specific embodiments and with the accompanying drawings. A flow chart of the waterproofing method of the first embodiment of the present invention. In FIG. 2, the waterproof method is for having a first housing, an electronic device, and the first housing has a first edge for engaging the second edge of the second housing. The method includes: on the first housing, a protrusion around the first edge, that is, the protruding material surrounds a portion disposed on the first housing and forms a surrounding on the second housing The second edge is opposite to the domain of the convex (four); then, the elastic sheet is provided with the elastic sheet: medium=Γ has a body and a soft interference body protruding from the body, =Γ:::: is, or a rectangle, and The soft interfering body is a secret body' and the pyramid is tapered in the above, and the sides of the polygon are further extended to the bottom portion to be polygonal, and the solid cone is joined to the first edge of the fiscal point; "' ', the edge is caused to cause the protrusion to squeezing the soft interference body to deform to form a first interference structure. In other words, in the present invention, when the elasticity is first subjected to the extrusion of the protrusion The soft interfering body of the bomb is deformed by the head portion, and since the soft body is involved in the body The size is relatively small, so the reaction force generated by the deformation of 201217675 is not enough to deform the first edge of the first-shell. The projection of the first body is pressed by applying downward When the force is directed toward the soft If (4) and the body is moved and squeezed, the soft #interference system first undergoes the downward force to cause deformation; then, the deformed soft interference system again will be the downward force. The grounding is transmitted to the body, causing the body to deform as well. It is worth noting that the soft interference system 'effectively disperses the downward force, and the body indirectly affects the shape after the deformation The variable does not affect the combination of the first edge and the second edge. Further, according to the design of the projection, in addition to squeezing the soft interference body, the elastic unit may be further squeezed. The body is deformed. However, since the section of the body is quadrangular or rectangular, the protrusion can exert an average pressure on the body to cause uniform deformation, and the corresponding reaction force can be generated. The soft interference effect can be applied to the surface of the body to avoid the deformation of the joint at the joint to avoid the poor waterproofing and dustproof effect. The soft interference body of the embodiment can be plural, respectively protruding from the surface of the body, and - When the edge joins the second edge, the protrusions press the soft interference bodies to form a plurality of first-interference structures. The number of soft interference bodies can be designed according to user requirements. Referring to FIG. 3, the present invention is A flow chart of the waterproofing method of the second embodiment. In addition to the waterproofing method of the above-described first embodiment, the method further includes forming a rigid interference body at the protruding portion and engaging the first edge and the second portion. At the edge, the rigid interference body is pressed and positioned to position the body of the elastic unit to deform the 201217675 to form a second interference structure. In this embodiment, the soft interference body and the hard interference system are asymmetrically respectively The protrusion is disposed on the protrusion. In other words, one end of the projection has a convex hard interference body, and the hard interference system can be formed at a position that does not correspond to the soft interference body. When the first edge of the first housing is engaged with the second edge of the second housing, the rigid interference system can press the body of the elastic unit to deform, and the rigid interference body squeezes the A second interference structure different from the first interference structure may be formed at the body. Wherein, the second interference structure further provides a further waterproof effect. In addition, the hard interference structure can also provide the body positioning effect by extrusion. It is worth noting that the rigid interference body is not limited to any shape, i.e., the rigid interference body only needs to protrude from the projection, which is a constraint of the hard interference structure of the present invention. Referring to Figures 4a and 4b, there are shown schematic cross-sectional views of a waterproof structure according to a third embodiment of the present invention. In FIG. 4a, the waterproof structure 10 is used for an electronic device having a first φ housing 12 and a second housing 14. Please note that the first housing 12 and the second housing 14 of the drawing are only shown. A cross-sectional view of the joint portion of the two members does not show the entirety of the first casing 12 and the second casing 14. The first housing 12 has a first edge 122 for engaging a second edge 142 of the second housing 14. The waterproof structure 10 includes a projection 16, a recess 18 and an elastic unit 20. The protrusion 16 is formed on the first housing 12 around the first edge 122; the recess 18 is formed on the second housing 14 around the second edge 142, and the recess 18 is paired The protrusion 16 should be received; and the elastic unit 20 is received therein along the recess 18, the elastic unit 20 has a body 201217675 202 and a soft interference body 204, and the soft interference body 204 is extended from the body 202. Out. The body 202 of the elastic unit 20 may have a quadrilateral or rectangular cross section, and the soft interference body 204 may be a pyramid. In the embodiment, the body 202 is described by taking a rectangular body as an example. In another embodiment, the body 202 and the soft interference body 204 may be made of rubber. Moreover, when the first edge 122 engages the second edge 142, the projection 16 is received in the recess 18 and compresses the soft interference body 204 to deform to form a first interference structure. Referring to FIG. 4b, when the first housing 12 of FIG. 4a is engaged with the second housing 14, the protrusion 16 disposed around the first edge 122 of the first housing 12 is inserted into The recess 18 is also formed around the second edge 142 of the second housing 14 and the soft interference body 204 of the elastic unit 16 is pressed. It should be noted that the soft interference body 204 of the elastic unit 20 is first subjected to the force F by the protruding portion 16, and the soft interference body 204 is deformed by the downward force F, and further Squeezing the body 202 causes the body 202 to also deform within the recess 142. The soft interference body 204 and the body 202, the protruding portion 16 and the recess 18 are in contact with each other and pressed to form a first interference structure, thereby providing a waterproof function. Further, since the amount of deformation of the soft interference body 204 when the force F is received is small, the case where the casing is deformed due to the application of the excessive reaction force F' to the projection portion 16 is not caused. By the waterproof structure of the present invention having the first interference structure, the tight joint design of the first edge 122 of the first casing 12 and the second edge 142 of the second casing 14 is not affected. It still retains its waterproof structure. 201217675 Referring to Figures 5a and 5b, there are shown schematic cross-sectional views of a waterproof structure according to a fourth embodiment of the present invention. In FIG. 5a, the waterproof structure 10' is used for an electronic device having a first housing 12 and a second housing 14, and the first housing 12 has a first edge 122 for engaging the second housing. The second edge 142 of the 14 is excluding the projection 16, the recess 18 and the elastic unit 20 which are identical to the previous embodiment. The first housing 12 further includes a rigid interference body 124, and the rigid interference body 124 extends from the protruding portion 16 and is rigid when the first edge 122 engages the second edge 142. The interference body 124 and the soft interference body 204 are asymmetrically disposed on the protrusion 16 and the body 20, respectively. It is to be noted that the rigid interference body 124 is not limited to any shape, and it only needs to protrude from the projection 16 to be the hard interference body 124 of the present invention. Referring to FIG. 5b, when the first housing 12 is coupled to the second housing 14, the protruding portion 16 circumferentially disposed on the first edge 122 of the first housing 12 is inserted into the same surrounding arrangement. In the recess 142 of the second edge 142 of the second housing 14, the soft interference body 204 of the elastic unit 20 is pressed. Here, the soft interference body 204 of the elastic unit 20 is subjected to deformation by the force F applied to the protruding portion 16, and at the same time, the rigid interference body 124 located at the protruding portion 16 is The body 202 of the elastic unit 20, that is, the body 202 and the soft interference body 204, simultaneously and separately receive the downward force from the rigid interference body 124 and the protrusion 16 And causing the body 202 to deform in the recess 18. The rigid interference body 124 and the body 202 are in contact with each other and pressed to form a second interference structure, thereby providing a waterproof function. It is worthwhile to note that 11 201217675 means that since the rigid interference body 124 is small in this embodiment, the deformation of the body 202 caused by the pressing of the body 202 is small, so the body 202 does not apply excessive The reaction force F' is caused by the hard interference body 124 causing deformation of the casing. Furthermore, since the rigid interference body 124 partially presses the body 202, the effect of positioning the body 202 can be provided. In summary, according to the foregoing first interference structure and the second interference structure, the waterproof structure of the present invention can reduce the overall waterproof effect by not deforming the joint of the shell due to excessive application of a reaction force on the shell. In addition, it can be used to further effectively improve and enhance the waterproof effect. Compared with the prior art, the waterproof method and the structure thereof of the present invention utilize an elastic unit having a soft interference body, and can be used to form a first interference structure without changing the design of the original electronic housing. In addition to providing a waterproof function, it is also possible to achieve that when the shells are combined, the shells are not deformed due to excessive reaction forces generated by the elastic unit and cannot be tightly coupled. Furthermore, the present invention can further achieve a further anti- φ water effect through the housing having a rigid interference body. That is, the rigid interference body can be used to fix the elastic unit, and a second interference structure can also be formed. . Therefore, the waterproofing method and the structure thereof of the present invention can be used to solve the problem in the prior art because the elastic unit generates excessive reaction force and cannot make the installations close to δ and the combination is lost. Waterproof and dustproof (Ingress Protection; ip) grade. The invention has been described above in terms of the preferred embodiments thereof, and it should be understood by those skilled in the art that the present invention is not intended to limit the scope of the invention. It should be noted that all changes and equivalents to the embodiment are to be included in the scope of protection of the present invention (4) below. Therefore, the definition of the present invention is based on the definition of the armor. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1B is a schematic cross-sectional view of a structure in which the structure of the prior art is unbonded, and FIG. 1b is a schematic cross-sectional view of a waterproof structure of the prior art. FIG. 2 is a first embodiment of the present invention. FIG. 3 is a flow chart of a waterproof method according to a second embodiment of the present invention; FIG. 4a is a cross-sectional view of the waterproof structure of the third embodiment of the present invention before unbonded; FIG. 4b FIG. 5a is a schematic cross-sectional view of the waterproof structure of the fourth embodiment of the present invention; FIG. 5a is a cross-sectional view of the fourth embodiment of the present invention; A schematic cross-sectional view of the combined waterproof structure of the embodiment. [Main component symbol description] 2 Lower case 22 Recessed portion 4 Annular apron 6 Upper case 62 Projection portion 13 201217675 8 Housing joint ίο' ur Waterproof structure 12 First case 122 First edge 124 Hard interference Body 16 projection 18 recess 20 elastic unit 202 body 204 soft interference body F force F, reaction force